Use of struts and Ajax in SSH

Hard work The problem of nearly a week finally solved, so happy

In fact, it's very simple, first set up a map set in Controll.

    Private New Hashmap<>();          Public Map<string, object> getData () {            return  data;        }          Public void setData (map<string, object> data) {            this. Data= data;        }        

And then write the following code

        /*** Check email when registering *@return         * @throwsException*/                 Publicstring Selectemail () {String a=Us.selectemail (User.getemail ()); if(A.equals ("false") {data.put ("Result", "1"); }Else if(A.equals ("true") {data.put ("Result", "2"); }            return"Ajax"; }

Struts China code is as follows:

< Packagename= "Beforeuserinfo"namespace= "/user"extends= "Json-default">        <!--Query the mailbox when registering -        <Actionname= "Selectemail"class= "Com.zy.controll.UserControll"Method= "Selectemail">                    <resultname= "Ajax"type= "JSON">            <paramname= "root">Data</param>                </result>            </Action></ Package>

The page code is as follows:

          <Divclass= "Mask_content_body">                 <formID= "RegForm"Action= "${pagecontext.request.contextpath}/user/insertuser.action"onsubmit= "Javascript:return yz ()">                    <H3>New User Registration</H3>                    <inputtype= "Email"ID= "Regemail"placeholder= "Please enter the mailbox"name= "Email"onblur= "Yzemail ()"> <spanID= "Emailmsg"></span>                    <inputtype= "Password"ID= "REGPSW"placeholder= "Please enter password"name= "Password"onblur= "YZPW ()"><spanID= "Message1"></span>                                       <inputtype= "Password"ID= "Regpswagain"placeholder= "Please enter your password again"name= "Psw_again"onblur= "yzPW2 ()"><spanID= "Message2"></span>                    <DivID= "Yzm"class= "Form-inline">                    <inputtype= "text"name= "Yzm"ID= "Code_input"value=""style= "width:45%; display:inline-block;"placeholder= "Please enter verification code">                        <DivID= "V_container"style= "width:45%;height:40px;float:right;">                                                </Div>                                            </Div>                    <inputtype= "Submit"onclick= "return Commitregform ();"value= "Note & #x3000; book">                        <%-- <div>${error}</Div>--%><Div><H2ID= "AA"></H2></Div>                 </form>            </Div>

function Yzemail () {    var reg4 =/^\w+ ([-+.] \w+) *@\w+ ([-.] \w+) *\.\w+ ([-.] \w+) *$/g;    var email = $ ("#regEmail"). Val ();    var password = $ ("#regPsw"). Val ();    if (!reg4.test (email)) {        $ ("#emailMsg"). HTML ("The mailbox is not formatted correctly!"). CSS ("Color", "red");        return false;    }    $ ("#emailMsg"). HTML ("");    $.post ("${pagecontext.request.contextpath}/user/selectemail.action", {        "email": $ ("#regEmail"). Val (),    },    function (data) {        alert (data.result);        if (data.result== "1") {                        $ ("#emailMsg"). HTML ("account already exists"). CSS ("Color", "red");            return false;        }    })    return true;}

Use of struts and Ajax in SSH